Can't link target riscv64gc-unknown-linux-gnu on linux

[cdecompilador]

Problem
Can't link target riscv64gc-unknown-linux-gnu on linux, im experimenting with riscv
and I thought that it would be easy to make a hello world and compile it directly but... linker issues!
Since I've experienced something similar before I tried some solutions but none with success.

Tries
This sould work out of the box
-> rustc main.rs --target=riscv64gc-unknown-linux-gnu main.rs
🔴 linking with 'cc' failed: exit code: 1

Telling it to use llvm? (use to fix this kind of issue)
-> rustc main.rs --target=riscv64gc-unknown-linux-gnu -C linker-flavor=ld.lld main.rs
🔴 linking with 'lld' failed: exit code: 1 ...
lld: error: unable to find library: -lgcc_s -lutil -lrt -lpthread -lm -ldl -lc

Maybe with the riscv linker...
-> rustc --target=riscv64gc-unknown-linux-gnu -C linker=/opt/riscv/bin/riscv64-unknown-elf-ld main.rs
🔴 argument -pie not supported

Any solutions to this?

Notes

Output of rustup --version:

rustup 1.23.1 (3df2264a9 2020-11-30)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active 'rustc' version is 'rustc 1.52.0-nightly (45b3c2851 2021-03-04)'

Output of rustup show:

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/elgusanito/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2020-07-27-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu

installed targets for active toolchain
--------------------------------------

riscv32imac-unknown-none-elf
riscv64gc-unknown-linux-gnu
riscv64gc-unknown-none-elf
x86_64-unknown-linux-gnu

active toolchain
----------------

nightly-x86_64-unknown-linux-gnu (directory override for '/home/elgusanito/rust/riscky-whooshky-fivesky')

[kinnison]

Apologies for taking so long to get back to you on this one.

For cross compilation you require that your host is capable of building/linking for that target. While the target is rustup gets you te build portion of that for Rust, it does not get you the underlying linking capability nor the system runtime (libc). You will need to work out how to acquire that tooling for your particular OS, or else use a docker designed for cross compilation such as those provided by the cross project.